Cutting-press



(No Model.)

W. G. ENTRBKIN.

CUTTING PRESS.

N0. 386,459. Patented July Z4, 1888.

N. PETERS, Phnhrumagnpher. wuhingmn. DA c.

tren drames larnsr @lirica "ILLIAM G. ENTREKIN, OF PHILADELPHIA,PENNSYLVANIA.

CUTTING-PRESS.

SPECIFICATION forming part of Letters Patent No. 386,459, dated July 24,1888.

Application filed May 18, 19.85.

To all 207mm it may concern:

Beit known that I, WILLIAM G. ENTRE K1N, a citizen of the United States,and a resident of Philadelphia, Pennsylvania, have invented certainImprovements in Cutting-Presses, of which the following is aspecitcation.

My invention consists of a machine for cutting pieces of a desired sizeor shape from sheets ofpaper, leather, cloth,wood,orothermaterial, theobjectsof myinvention being to permit the inspection otthe piece whichis being cut, to adapt the machine l'or cnt-ting pieces of diilerentshapes alld sizes, and to insure the retelltion of the sheet or sheetsin proper position while being eut.

In the accompanying drawings, Figure l is a perspective view of acutting-press constructed in accordance with my invention; Fig. 2, alongitudinal section ofthe same on a larger scale; Fig. 3, atransversesectioli,partly in elevation; Figs. 4 and 5, enlarged sections, on astill larger scale,of parts of the machine; and Figs. and 7 viewsillustrating` moditications.

A is the base of the machine, to which is bolted or otherwise rigidlysecured a hollow frame, I3, having in front a projecting or overhangingportion, B', through which is an opening, D. lo the overhanging portionB ofthe frame, around the lower edge ofthe openingD is secured byvertical bolts a, Fig. 4, a frame F, and to the latter are secured theblades d ol' the cutting-knife.

The supporting-bed G, for the sheets ofpaper or otller material to becut, has a detachable plate, f, against which the knife acts, and saidbed is provided with opposite rearwardlyprojecting arms g, which arehung to the projecting ends of a shaft, h, secured to the frame B. Y

To the under side of the bed G is secured a plate, t', upon which acts acam, J, carried by a shaft, 7.', adapted to bearings m on the frontportion ot' the base A, one end of this shaft projecting beyond itsbearing for the reception of an operating al'nl or level', M, as shownin Fig. l. When the outer end of this lever is depressed, the cam J actsupon the bed G and lifts the same, so as to bring into forcible con tactwith the cuttingknife the sheet or sheets of paper or other materialsupported upon the by screws b Serial No. 165,900. (No model.)

bed, the opening Din the overhanging portion fl ot the l'rame Bpermitting the inspection of that portion of the material which iswithin the limits of the cutting-knife, so that when necessary it canbeproperly centered ill respect to the said knite.

\Vhcll it is desired to change the size or shape of the pieces to becut, the frame F can be removed and another knife-carrying frame ofdil'ierent size or shape substituted therefor, the platef of the bed Gbeing also changed to accord therewith.

In order to eonline the material closely to the suppoltingbedwhilesaidmaterialis beingcut, I place inside the cutting-knife a frame, N, whichconforms to the outline of the knife, is supported by bolts n, carriedbythe trame F, and is acted upon by springs p, as shown in Fig. 5. `Whenin its normal positiomtllisfralne Nprojeets below the lower edge ot' thecuttingknit'e, so that before the latter acts upon the material on thesupporting-bed the l'rame N eolnes into contact with said material andcon- Iines the saule at a point close to tlle knil'e, wrinkling orbuckling ol the material being thereby eti'ectually prevented, the frameN yielding as the bed G rises, so as not to interfere with the cuttingaction of the k nite.

A spring-plate, s, at one side of the base A, serves, by engagement witha projection, t, on the hub ofthe lever M, to retain said lever in itselevated position, the tension of the spring being readily overcome,however, on applying pressure to the outer end ofthe lever.

Although I prel'er the use of a pivoted supporti lig-bed and a ealn andlever for operating the saine, these are not absolutely necessary to theproper carrying out of my invention. For instance, the bed may have aserewstein adapted to a nut,secu1ed to or forming part ot' which is aworm-wheel gearing into a worm or operating sha1n t adapted to bearingson the ,base, as shown in Fig. (i, or a screwsteln adapted to a threadedopening ill the base may bear upon the bed, as shown ill Fig. 7, saidstem being provided with a suitable operating handle.

I claim as my invention- I. rlhe combination of the frame comprising theprojecting hase and rear standard having an overhanging portion withopening through ICO the same, a knife secured to the undei` side of saidoverhanging portion around the opening in the same, a snpportingbedmovable beneath said overhanging portion, and an operating device forsaid bed having its bearing on the base, all substantially as specified.

2. The combination'of the frame comprising the projecting base, rearstandard, and elevated and overhanging front portion with knife on theunder side, the supportingbed located beneath said overhanging frontportion of the frame and carried by arms pivoted t0 said rear standard7and an operating device for the bed having its bearing on the base be'-low said bed, all substantially as specified.

to this specification inthe presence of two s-nb- 25 scrbing witnesses.

WV. G. ENTREKIN.

Vitnesses:

WILLIAM F. DAvIs, HARRY SMITH.l

